DTC P0116

DTC P0116  : ECT Sensor 1 Circuit Range/Performance Problem

DTC (PGM-FI)

1. ECT sensor 1 check

   -1. Turn the vehicle to the ON mode.

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   ECT Sensor 1	More than 176	deg.F
   	More than 80	deg.C

   Do the current condition(s) match the threshold?

   YES 

   Observe the value of ECT Sensor 1, then go to step 3.

   NO 

   Observe the value of ECT Sensor 1, then go to step 2.

2. Problem verification (low temperature)

   -1. Enter the maintenance mode, then start the engine .

   -2. Hold the engine speed at 3000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.

   -3. Check the parameter(s) below with the HDS

   Signal	Current conditions
   	Values	Unit
   ECT Sensor 1

   Does ECT Sensor 1 change 18 deg.F (10 deg.C) or more?

   YES 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

   NO 

   The failure is duplicated. Replace ECT sensor 1 .

3. Problem verification (high temperature)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Open the hood, and let the engine cool for 3 hours.

   -3. Turn the vehicle to the ON mode.

   -4. Check the parameter(s) below with the HDS

   Signal	Current conditions
   	Values	Unit
   ECT Sensor 1

   Does ECT Sensor 1 change 18 deg.F (10 deg.C) or more?

   YES 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

   NO 

   The failure is duplicated. Replace ECT sensor 1 .